The design of mat foundations
... below the active soil zone Expansive soils are most prevalent on the Atlantic and Gulf coastal plain and in some areas of the central and western United States Photograph of the construction of the ... being designed for a small office building with a total live load of 250 kips and dead load of 500 kips Find: (a) the depth Df for a fully compensated foundation, (b) the depth Df if a soft clay ... Increase of stress under the center of a flexibly loaded rectangular area Therefore, the average pressure increase in the clay layer is, ∆qavg = (92.3 + 4(78.8) + 69.8) = 79 psf The pressure po at the...
Ngày tải lên: 16/10/2012, 10:43
... table Therefore, the rigidity of the thrust bearings is especially important To increase the rigidity, the thrust bearings are preloaded to 40 kN by Belleville spring washers at the upper end of the ... operating conditions as the expansion of the rotating parts due to the effects of heat and centrifugal force not cause jamming of the outer rings in the housing Lubrication, sealing The bearings are ... until the roller-and-cage assembly runs under a light preload (5 µm) Surface finish and dimensional accuracy of the workpiece mainly depend on the axial rigidity of the spindle headstock and of the...
Ngày tải lên: 25/12/2013, 05:17
... is made up of the weight of the rotor and the two variable top and bottom fan impellers as well as the thrust of these fan impellers They are supported by the upper thrust bearing The radial ... kW; range of speed 11 2,240 min–1 Machining of the housing bore is simplified in that the nominal outside diameters of the radial and thrust bearings are the same The O.D tolerance of the angular ... Bearing selection The selection of the bearings is primarily based on the main thrust, which is directed downwards It is made up of the weight of the rotor and and pump impeller (4 kN), the pump thrust...
Ngày tải lên: 25/12/2013, 05:17
Tài liệu The Design Of Manufacturing Systems P2 docx
... context of the product The concepts of feature flexibility and feature importance can be used to reduce the redesign solution search space The problem of ranking of the redesign solutions (on the ... so that the designer can easily interact with the system Ranking of Redesign Alternatives Another area requiring research attention in the context of generation of redesign solutions (design advisor) ... Evaluation Typically, the designer designs a product with minimal knowledge about the capabilities and limitations of the manufacturing technology The designer then tries to find out if the design can be...
Ngày tải lên: 19/01/2014, 18:20
Tài liệu The Design Of Manufacturing Systems P1 pptx
... know the prices of chemicals in the various markets and the operating costs of processes, the problem is then to decide the operating level of each process and amount of each chemical in the list ... for the production of each chemical We might then contemplate the in-house production of some of the required ingredients, forcing us to consider another tier of ingredients and by-products The ... limited The case of shut down of an existing plant results when the variable Wit takes a value of zero after a given time period t The economics of shut down can be modeled by the inclusion of the...
Ngày tải lên: 19/01/2014, 18:20
Tài liệu The Design of Rolling Bearing Mountings P1 docx
... is made up of the weight of the rotor and the two variable top and bottom fan impellers as well as the thrust of these fan impellers They are supported by the upper thrust bearing The radial ... kW; range of speed 11 2,240 min–1 Machining of the housing bore is simplified in that the nominal outside diameters of the radial and thrust bearings are the same The O.D tolerance of the angular ... Bearing selection The selection of the bearings is primarily based on the main thrust, which is directed downwards It is made up of the weight of the rotor and and pump impeller (4 kN), the pump thrust...
Ngày tải lên: 23/01/2014, 04:20
Tài liệu The Design of Rolling Bearing Mountings P2 pdf
... roughening of the surfaces (increased running noise) Work end Bearing dimensioning The size of the bearings is dictated by the shaft diameter, which in turn is based on the anticipated vibrations The ... in the rolling gap In order to still achieve the thickness tolerances of the sheets in the micrometer range, the deflection is compensated for by inclining of rolls and and by counterbending of ... this end The two spindle bearings FAG B7030E.T.P4S.UL are mounted in O arrangement The bearings of the UL universal design are lightly preloaded by clamping the inner rings axially The bearing...
Ngày tải lên: 23/01/2014, 04:20
Tài liệu The Theory of the Design of Experiments doc
... more frequently than “theory of evolution” in the scientific literature Why does the phrase “theory of evolution” appear nearly 16 times as frequently as “theory of ecology” in the scientific literature ... eschew the phrase the theory of evolution.” Granted, evolution is a theoretically more cohesive field than ecology: Genes, the fundamental units of evolution, are uniquely defined in terms of their ... in the mid19th century, as the study of the relationship between organisms and environment, and a century later by Andrewartha and Birch (1954) as the study of the distribution and abundance of...
Ngày tải lên: 25/01/2014, 08:20
Tài liệu The Design Of Manufacturing Systems P2 pptx
... context of the product The concepts of feature flexibility and feature importance can be used to reduce the redesign solution search space The problem of ranking of the redesign solutions (on the ... so that the designer can easily interact with the system Ranking of Redesign Alternatives Another area requiring research attention in the context of generation of redesign solutions (design advisor) ... Evaluation Typically, the designer designs a product with minimal knowledge about the capabilities and limitations of the manufacturing technology The designer then tries to find out if the design can be...
Ngày tải lên: 25/01/2014, 13:20
Tài liệu The Design Of Manufacturing Systems P1 docx
... know the prices of chemicals in the various markets and the operating costs of processes, the problem is then to decide the operating level of each process and amount of each chemical in the list ... for the production of each chemical We might then contemplate the in-house production of some of the required ingredients, forcing us to consider another tier of ingredients and by-products The ... limited The case of shut down of an existing plant results when the variable Wit takes a value of zero after a given time period t The economics of shut down can be modeled by the inclusion of the...
Ngày tải lên: 25/01/2014, 13:20
Tài liệu INDUSTRIAL TECHNOLOGY ASSESSMENTS: An Evaluation of the Research Program of the Office of Industrial Technologies doc
... Quinn of the Department of Energy’s Office of Industrial Technology The committee is particularly grateful to Jim Quinn and Denise Swink and the staff of the Office of Industrial Technology for their ... secure the services of eminent members of appropriate professions in the examination of policy matters pertaining to the health of the public The Institute acts under the responsibility given to the ... Preface In 1993, the U.S Department of Energy (DOE) Office of Industrial Technology (OIT) established a group of seven industries designated as Industries of the Future (IOF) These industries...
Ngày tải lên: 12/02/2014, 19:20
Tài liệu TRANSFER CREDIT SERVICES GUIDE: Produced by the Office of the Registrar ppt
... PDF file of the digital course manual or email the link to the school's official website with the PDF of the digital course manual to the Information Projects Coordinator in the Office of the Registrar ... college or university should have their official transcripts mailed directly to the Office of the Registrar at the following address: Berklee College of Music Office of the Registrar Page -5- ATTN: ... screen-shot of the digital course description (taken from the school's official website), specifying the course in question, to the Information Projects Coordinator in the Office of the Registrar...
Ngày tải lên: 15/02/2014, 14:20
Tài liệu Transfer Credit Policy The Office of the University Registrar docx
... Outcome The Ohio State University – Office of the University Registrar http://registrar.osu.edu/transfer_credit/transferCreditPolicy.pdf Page of 11 Transfer Credit Policy The Office of the University ... to the Office of Academic Affairs That office will issue the final decision c If a transfer credit award is at issue, then the Associate Registrar will examine the appeal to determine whether ... 09/12/2012 The Ohio State University – Office of the University Registrar http://registrar.osu.edu/transfer_credit/transferCreditPolicy.pdf Page 10 of 11 Transfer Credit Policy The Office of the University...
Ngày tải lên: 15/02/2014, 14:20
Chapter 15 introduction to the design of electric machinery
... between the tooth Thus wstR = rstθ st (15.2-31) The width of slot between the base of the tips is taken as the average of the distance of the chord length of the inner corners of the tooth tips at the ... that the reciprocal of wsiR is set to the average of the reciprocals of the chord lengths between inner corners of slot at the top of the slot (under the tooth tip) and the outer corners of the ... leo is the end winding offset, which is the amount of overhang of the end winding between the end of the stator stack and the end winding bundle The end winding offset is a function of the manufacturing...
Ngày tải lên: 16/02/2014, 18:55
Tài liệu 2001 Assessment of the Office of Naval Research’s Aircraft Technology Program docx
... secure the services of eminent members of appropriate professions in the examination of policy matters pertaining to the health of the public The Institute acts under the responsibility given to the ... M WERTHEIM, Center for Naval Analyses Navy Liaison Representatives RADM LEWIS W CRENSHAW, JR., USN, Office of the Chief of Naval Operations, N81 RADM JAY M COHEN, USN, Office of the Chief of Naval ... rather than on innovation to enable future advances As in several other thrusts that the committee reviewed, there is a risk that the Navy will lose the 13 14 2001 ASSESSMENT OF THE OFFICE OF...
Ngày tải lên: 17/02/2014, 06:20
Tài liệu 2003 Assessment of the Office of Naval Research''''s Marine Corps Science and Technology Program ppt
... list of critical shortfalls identified at the front part of the process Then, with the current state of the art and the capabilities of the organization in mind, they will propose a series of specific ... secure the services of eminent members of appropriate professions in the examination of policy matters pertaining to the health of the public The Institute acts under the responsibility given to the ... 31, 2003) RADM JOSEPH A SESTAK, JR., USN, Office of the Chief of Naval Operations, N81 (as of July 15, 2003) RADM JAY M COHEN, USN, Office of the Chief of Naval Operations, N91 Marine Corps Liaison...
Ngày tải lên: 17/02/2014, 06:20
Tài liệu The Design of Prestressed Concrete Bridges ppt
... out of the tumult of data which includes: • • • • • • • • the physical characteristics of the site; the technical aspects concerned with the strength of materials and the theory of structures; the ... for the shape and size of the cut-out The final judgement on a design must rest with the combined response of public and profession The choice of a solution that is expressive of the flow of forces ... reduce the thrust of the roof, it is made of lightweight concrete, of which the density reduces towards the crown Also, the underside of the roof is relieved by caissons, which fulfil the three...
Ngày tải lên: 18/02/2014, 18:20
Tài liệu The Design Of Functional Programs - A Calculational Approach doc
Ngày tải lên: 19/02/2014, 14:20
Tài liệu SCRIBE: The design of a large-scale event notification infrastructure? doc
... the roles of these messages are described in the next sections The following variables are used in the pseudocode: topics is the set of topics that the local node is aware of, msg.source is the ... for topic ½½¼¼ The subscription of node ¼½½½ causes the other two nodes along the route to become forwarders for the topic, and causes them to add the preceding node in the route to their children ... locate the rendez-vous point of a topic If the publisher is aware of the rendez-vous point’s IP address then the PUBLISH message can be sent straight to the node If the publisher does not know the...
Ngày tải lên: 19/02/2014, 18:20
Tài liệu Novel Design of an Integrated Pulp Mill Biorefinery for the Production of Biofuels for Transportation pot
... using the exhaust gasses of the recovery boiler to further reduce the mixture to the 80% solids concentration The energy consumed by the evaporators is around 4.4 GJ/ton of pulp [14] Canadian Office ... beginning of the process to soften the incoming wood chips Next, the same process as the refiner pulping is completed to produce the pulp Compared to the other mechanical processes, this is the most ... in the collection of inorganic sulfur in the bottom of the reactor During that process a mixture of 12 sodium sulfide and sodium carbonate forms at the bottom of the typical recovery boiler The...
Ngày tải lên: 26/02/2014, 14:20